Richard Preston, 67, was advised to go to the Princess Royal University Hospital in Farnborough when he developed a cough and fever last month. He likened A&E to a 'warzone' praising the 'heroic' staff.

Dee Griffiths, headteacher at Haydock High School in Haydock, Merseyside, said there had been a marked change in pupils' behaviour over the last two terms since the school changed its policy on energy drinks.